Whenever a new location is released in Genshin Impact, the World Map is completely blacked out, making it difficult to traverse the area. Interacting with the first Statue of The Seven typically solves the issue, as is the case for The Chasm above-ground. But the Underground Mines work a little differently, as it doesn’t contain a Statue of The Seven.
The Underground Mine’s World Map islit up in parts, following the main area questline:The Chasm Delvers. Keep in mind that you may still traverse the entire map without lighting it up, but it can prove to be a little inconvenient.

Here are the quests you need to do to unlock every part of the Underground Mine, as well as relevant guides to help you complete them.